X-Git-Url: https://git.notmuchmail.org/git?a=blobdiff_plain;f=emacs%2Fnotmuch.el;h=1adea9c2c7d6fccf9e863d026745971185c3859b;hb=435cd249a014b37ecfedf4d38a3a6b6471c2730a;hp=6c0bc1bcae0ed9e3f423e9ccdb860484b4e18111;hpb=5e26d14536398210869a920f8e7bb84fd2ace6aa;p=notmuch

diff --git a/emacs/notmuch.el b/emacs/notmuch.el
index 6c0bc1bc..1adea9c2 100644
--- a/emacs/notmuch.el
+++ b/emacs/notmuch.el
@@ -428,14 +428,16 @@ matched and unmatched messages in the current thread."
   "Return the stable query for the current region.
 
 If ONLY-MATCHED is non-nil, include only matched messages.  If it
-is nil, include both matched and unmatched messages."
+is nil, include both matched and unmatched messages. If there are
+no messages in the region then return nil."
   (let ((query-list nil) (all (not only-matched)))
     (dolist (queries (notmuch-search-properties-in-region :query beg end))
       (when (first queries)
 	(push (first queries) query-list))
       (when (and all (second queries))
 	(push (second queries) query-list)))
-    (concat "(" (mapconcat 'identity query-list ") or (") ")")))
+    (when query-list
+      (concat "(" (mapconcat 'identity query-list ") or (") ")"))))
 
 (defun notmuch-search-find-authors ()
   "Return the authors for the current thread"